Let's let Donald describe it himself. From the video...
"If she worked on my plane, that's like a death wish for me. That's like an alcoholic...you put a scotch in front of them, it's like [makes twitching gesture]. This would be my form of alcoholism."
So either he's saying he can't control himself around women, or he abuses them (in the same way alcoholics abuse alcohol). The former is consistent with what he said in the infamous Access Hollywood video, "I better use some Tic Tacs just in case I start kissing her. You know, I’m automatically attracted to beautiful — I just start kissing them. It’s like a magnet. Just kiss. I don’t even wait. And when you’re a star, they let you do it. You can do anything."